Increase the height of the UINavigationBar

BigNavBar.h

#import <UIKit/UIKit.h>

@interface BigNavBar : UINavigationBar

@end

BigNavBar.m

#import "BigNavBar.h"

@implementation BigNavBar

-(id)initWithCoder:(NSCoder *)aDecoder {
    self = [super initWithCoder:aDecoder];
    if (self) {
        // here we set the offset for the topItem
        [self setTitleVerticalPositionAdjustment:-23 forBarMetrics:UIBarMetricsDefault];
    }
    return self;
}

-(CGSize)sizeThatFits:(CGSize)size {
    // here we give the frame "after layout of subviews", ie the very frame with height = 94
    return CGSizeMake(320, 94);
}

@end